ASTRO-PHYSICS GTO - GTO Quick Star Drift Method of Polar Alignment Quick Reference Sheet

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GTO Quick Star Drift Method of Polar Alignment Quick Reference Sheet
1. Rough align the mount
2. Slew to star near the zenith. This will be the “Altitude
Star”.
a) Double check correct mount orientation.
b) Line up nderscopes reticles with direction buttons.
c) Center the star with the direction buttons.
d) Re-calibrate.
3. Set Meridian Delay:
**Star in west (R.A. value < “z” or LST value) – advance
<1W>
**Star in East (R.A. value > “z” or LST value) – set back
<1E>
4. Select Altitude Star again and GoTo.
5. Make Altitude Adjustments.
a) E-W Error = orthogonality. Correct half with E or W
direction button.
b) Orthogonality part 2. Correct remaining E-W error
with nderscope adjustment screws.
c) N-S error = altitude. Correct half with altitude adjuster.
d) Altitude part 2. Correct remaining half of N-S error
with N or S direction button.
e) Recalibrate.
f) Return Meridian Delay to normal <0W>.
g) Select Altitude Star again and GoTo.
6. Make Azimuth Adjustments
a) Choose second star at least 40 deg. from altitude star
that is away from the pole.
b) Use GoTo to slew to second star.
c) Correct ENTIRE error with Azimuth Adjuster.
d) Skip Re-calibrate.
e) Select and slew back to Altitude Star.
f) Center, if needed with direction buttons and Re-cali-
brate.
g) Repeat process until adequately aligned.